1 /* 2 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_1; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; 27 28 import org.graalvm.compiler.core.common.LIRKind; 29 import org.graalvm.compiler.core.common.type.StampFactory; 30 import org.graalvm.compiler.graph.NodeClass; 31 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 32 import org.graalvm.compiler.nodeinfo.NodeInfo; 33 import org.graalvm.compiler.nodes.calc.FloatingNode; 34 import org.graalvm.compiler.nodes.spi.LIRLowerable; 35 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 36 import org.graalvm.compiler.word.Word; 37 import org.graalvm.compiler.word.WordTypes; 38 39 import jdk.vm.ci.code.Register; 40 import jdk.vm.ci.meta.JavaKind; 41 import jdk.vm.ci.meta.PlatformKind; 42 43 /** 44 * Gets the address of the C++ JavaThread object for the current thread. 45 */ 46 @NodeInfo(cycles = CYCLES_1, size = SIZE_1) 47 public final class CurrentJavaThreadNode extends FloatingNode implements LIRLowerable { 48 public static final NodeClass<CurrentJavaThreadNode> TYPE = NodeClass.create(CurrentJavaThreadNode.class); 49 50 public CurrentJavaThreadNode(@InjectedNodeParameter WordTypes wordTypes) { 51 this(wordTypes.getWordKind()); 52 } 53 54 public CurrentJavaThreadNode(JavaKind wordKind) { 55 super(TYPE, StampFactory.forKind(wordKind)); 56 } 57 58 @Override 59 public void generate(NodeLIRBuilderTool gen) { 60 Register rawThread = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).getProviders().getRegisters().getThreadRegister(); 61 PlatformKind wordKind = gen.getLIRGeneratorTool().target().arch.getWordKind(); 62 gen.setResult(this, rawThread.asValue(LIRKind.value(wordKind))); 63 } 64 65 @NodeIntrinsic 66 public static native Word get(); 67 }